Distributor tube for stokers



e 0 s pt 13 1927 N. M. LOWER E'r-Ai.

DISTRIBUTOR TUBE FOR STOKERS 2 Sheets-Sheet 1,

Filed March 13. 1922 Sept. 13,1927. 1,642,076

N. M. LOWER ET AL DISTRIBUTOR TUBE FOR STOKERS Filed March 13, 1922 2Sheets-Sheet 2 Patented Sept. 13, 1927.

UNITED STATES PATENT OFFICE.

NATHAN I. LOWER AND ALBERT B. CHALXER, OF PITTSBURGH, PENNSYLVANIA, AS-

SIGNORS TO LOCOIOTIVEBTOKEB COMPANY, A CORPORATION OF PENNSYLVANIA.

msr'nren'ron Tuna ron sroxnns.

Application illed latch 18, 1928. 4Serial No. 543,329.

The invention relates to the distributor tube or nozzle through whichcoal is dis' charged into a {ire box and is articularly adapted for useand is illustratedJ in connec- I tion with a Stoker mechanism of thetype :forming the subject matter of Letters Patent No. 1, 1,252 granted'to Nathan M. Lower March 15, 1921. As the invention ap rtains to thedistributor, only so much o the t remainder of the stoker mechanism isshown as is necessary to indicate the relation of the parts. As thedistributor tubes used in connection with the stokers of the t pe shownin the Lower patent project into the lire box l5 they are subjected tointense heat and are' consequentl short-lived.

One of t e objects of this invention is to provide a construction inwhich the parts of the distributor which are in danger of being burnedofi are removable, thus reducin the cost of replacement. A furtherobject o the invention is to provide means for cooling the exposedparts, and thus lengthening their term of service, and a still furtherobject is 26 to provide an improved form of baille or .abutment forarresting a portion of the impelled fuel and delivering it to the backend of the tire-box.

The invention consists of a structure such as is hereinafter describedand is illustrated in the accompanying drawings, in which f.

Fig. 1 is a detail vertical section through the back head of alocomotivefire-box, showlng the improved distributor tube applied thereto, afragment of the adjacent portions of the stoker mechanism being shown inele-- vation;

i Fig. 2 is atransverse section of the distributcr tube on the line 2-2of Fi 1;

Fig. 3 is a similar view on the e 3-3 of Fig 1;

Fig. 4 is a sectional detail on the line 4--4ofFig.1; l Fig. 5 is a planview of the distributor; Fig. 6 is a central plan section ofthe'distributor and of the portion of the Stoker to V-whivch it isattached; l V j Fig. 7 is a central vertical longitudinal section of thedistributor showing `a modified form of construction; and

Fig. 8 is a bottom plan view thereof. The stokers Yfor use with whichthe improved distributor tube is es' cially adapted have heretofore beenu in connection with locomotives. There is shown at 10 a through thetube.A

of the back head l0. A deflector plate 15 t projects forwardlly over thetop of the tube and is removab y secured thereto, being provided with astem 16 having a socket for tting upon an upwardl projecting lu 17 onthe top of the tube, the inner end o 'the stem 16 engaging under a lip18 formed on the tube. As shown in Fig. 5 the delector plate 15 isrelatively wide at its forward end and is reduced at its rear end toform the socket engaging stem 16.' In order to strengthen the late andprevent its outer end from ben ing downward under its weight and theintense heat of the Iirebox, the upper side of the plate 15 is providedwith a reinforcing rib 150.

The bottom of the tube 13 is open and a plate 19 lits within this oeningt resting upon a bridge 20 integral wit the side walls o the tube,and extending across `its opening and having a pair of ugs 21 whichengage in recesses in the margms of the tube wa ls thereby interlockingthe plate with the tube walls and preventing its accidentaldisplacement. The tube 13 is also provided with a bridge 22 at itsrearward end connecting the margins of its side walls and the rear endof the plate 19 rests thereu on.

A stem 23 projects forwar y from the body of. the plate 19 of which itconstitutes an integral part and at the forward end of this stem thereis carried a cross bar 24, the len h of whichis substantiallyequal tothe wi th of the lrate 19. The inner face of this bar is pre ably flatand projects somewhat above the plane of the upper surface of the plate19, forming an abutment for arresting the lower stratum of coal impelledThe stem 23 and abutment 24 are cored to v forma continuous passagetherethrough, as

indicated at 25, 26, the passage 26 extending longitudinally throlgh theabutment and be in open at the en thereof.

27 there is `shown `the usual nipple extending through the floor of theelbow 12 and having a series of jet openings 28 .directed through thetube, the nipple 27 being adapted for the attachment thereto atits lowerend of a steam pipe. A pipe or nipple 29 leads laterally from the nipple27, below its jet openings, and terminates adjacent the rear end of thepassage 25 through the stem 23, into which it discharges. The rear endof the stem 23 is flared, as indicated at 30, to permit the entry of airinduced by the steam blast from the nipple 29. The air and steam passingthrough the passages 25 and .26 will tend to prevent the abutment andits supporting stem from becoming overheated, thus prolonging the lifeof the same.

The bridge 22 is channeled transversely, as shown at 31, to looselyreceive the pipe or nipple 29.

Inasmuch as the tube and its bottom are not exposed to the, intense heatof the furnace it may be found desirable to form the bottom of the tubeas an integral part thereof, providing only for the removal of theabutment.

This form of construction is illustrated in Figs. 7 and 8, the bottom 32of the tube 13 being formed integral with its side walls. The abutment24 is of the same form as shown in Fig. 1, but its stem 33 is not madeintegral with the bottom of the tube but is provided with a pair oflateral .shoulders 34, 35, adapted to rest upon a pair of lips 36. 37,formed on the bottom of the tube. The stem 33 is also rovided at itsrearward end with a pair of ateral lugs 38` 39, which engage back of apair of lugs 40, 41, formed on the bottom of the tube, and thus preventthe withdrawal of the stein. A second pair of lugs 42, 43, formed on thebottom of the tube, prevent the stem from being shoved in too far. Inorder to permit t e pipe 29 to extend well into the passage 25 and yetprovide for the assembling of the parts, the upper wall of the stem 33may be slotted at its rearward end indicated at 44.

In the operation of the device the fuel is discharged into the tube 13from the elbow 12 and is projected forwardly through the tube by thesteam issuin from the jet openings 28 and is scattare through the tube,some of it beingthrown upwardly against the plate 15 which deects itdownwardly and scatters it over the central zone of the fire box` theplate 15 preventing the fuel from being thrown upwardly and into theboiler tubes; some of the fuel strikes the side walls of the tube and isthereby prevented from being too widely7 scattered some of it isrojected forwardly through the tube wit out encountering any of itswalls and is carried well to the front end of the re box; and some of itis directed laterallv to the sides of the lire box, especially thoseportions that come in contact with the steam and air vissuing from thepassage 26. The lower stratum of the fuel follows the bottom of the tubeand encountering the upstanding abutment 24 is arrested and dropped uponthe rearward end of the grate. Lumps of coal in the lower stratum whichstrike the abutment 24 below their centers of gravity bound over theabutment and fall upon the rate a little in front of it.

en under the influence of the intense heat of the furnace the abutmentor its stem or the plate l5 become burned away or Warped, they may bereadily replaced without detaching the tube 13 from the elbow 12. Thisdetachability of the parts not only reduces the cost of replacement, butermits the interchange of parts with the minimum expenditure of labor ordelay to permit the entire cooling of the fire box.

While a preferred form of construction is shown and described, variouschanges of detail may be made without departing from the scope of theinvention.

We claim as our invention:

1. A tubular fuel distributor for stokers havin a removable bottom, anabutment exten ing transversely to the forward end of the tube andextending above the plane of the bottom and being spaced forward fromthe front end thereof, and a stein connecting the abutment with thebottom.

2. A tubular fuel distributor for stokers having a removable bottom, anabutment extending transversely to the forward end of the tube andextending above the plane of the'bottom and being spaced forward fromthe front end thereof, and a stem connecting the abutment with thebottom, such stem and abutment having a continuous passage therethrough,and a pipe discharging into the rearward end of the passage.

3. A distributor tube for stokers having an open bottom and a bridgecrossing the opening, a plate fitting within the opening and resting onthe brid and having its rear end engaging said istributor tube, anabutment transverse to the length of the plate and spaced from theforward end thereof, and a stem connecting the late and abutment, suchstem and abutment aving a continuous passage therethrough, and a pipedischarging into such passa 4. A distributing member inclieding a plateada ted to form the bottom of a tubuar distri utor for a stolzer, mea-nson the plate to interlock with the distributor, a

stem projecting forwardly from the end of the p ate and a fuel abutmenton the stem spaced from the front end of the plate and etiding above theupper surface of the p a 5. A distributing member including a plateadapted to form the bottom of a distributor tube .for stokers, andhaving means for interlocking engagement therewith, a

fuel abutment spaced forwardly from the front end of the plate andextending above its upper surface and a narrow stem connecting the barwith the plate.

6. A distributor for stokers including a tube open at the bottom, abridge extending across the open bottom, a plate resting on the brid eand interlocked with the tube, a fuel agutment in front of the plate andextending above itsr upper surface.,

7. A distributor for stokers including a tube o en at the bottom, abridge connecting the si e walls of the tube at the bottom, a plateresting on the bridge and having lugs interlocked with the side wallsand a fuel abutment in front of the plate and extending above its u persurface.

8. In a istributor for stakers, a tubular member adapted to beapproximately horil zontally positioned in service, and having an openbottom and means-at its upper side adapted to interlock with a removabledeflector, and a bridge crossing its open bottom alapted to support aremovable bottom p ate.

9. In a distributor for'stokers, a tubular member adapted to beapproximately horizontally positioned in service including a top havingmeans adapted to interlock with a removable delector, side wallsconnected with the top and a bridge connecting the side walls adjacentto vtheir lower edges and adapted to support a removable bottom plate,the bottom of the tube being open except for said bridge.

10. In a mechanical stoker, the. combination of a substantiallyhorizontal tube {iattened at the bottom, a stem extending forwardly fromthe bottom of the tube and a fuel abutment in the form of a cross barcarried by the stem spaced forwardly from and proyecting above thebottom of the tube the space between the cross bar and the bottom of thetube being open for coal to pass downwardly on each side of the stem.

11. In a mechanical Stoker, the combination of a substantiallyhorizontal tube having a flattened detachable bottom, a jet forimpelling coal throu h the tube, a stem integral wlth and projectingforwardly from the flattened bottom and a fuel abutment in the form of across bar carried by the stem, spaced from theforward end of andextending above the bottom, the space between the cross bar and thefront end of thebottom being open for coal to pass downwardly on eachside of the stem.

12. A fuel deflector member for use on the u per side of a distributortube having a soc et and a projecting lug thereon, comprising a platereduced in width at one end to engage said socket, and provided with a'l socket for receiving said lug, the width of the forward portion ofsaid plate being not less than the internal diameter of said tube, saidplate being provided with a reinforcing rib on its u per surface forpreventing bending of said plate when the same becomes heated while 1nuse.

13. A fuel distributin member comprising a plate adapted to orm thebottom of a distributor tube for stokers, said plate terminatingadjacent to the forward end of said tube when in position therein, andhaving means for lnterlocking engagement therewith, a fuel deilectingabutment spaced v forwardly from the front end of the plate andextending above its u per surface and means for connecting the a utmentwith the plate.

NATHAN M. LOWER. ALBERT R. CHALKER.

fuel abutment spaced forwardly from the front end of the plate andextending above its upper surface and a narrow stem connecting the barwith the plate.

6. A distributor for stokers including a tube open at the bottom, abridge extending across the open bottom, a plate resting on the brid eand interlocked with the tube, a fuel a utment in front of the plate andextendin above its upper surface.

7. A istributor for stokers including a tube o en at the bottom, abridge connecting the si e walls of the tube at the bottom, a plateresting on the bridge and having lugs interlocked with the side wallsand a fuel abutment in front of the plate and extending above its u persurface.

8. In a istributor for stokers, a tubular member adapted to beapproximately horizontally positioned in servlce, and having an openbottom and means at its upper side adapted to interlock with a removabledetlector, and a bridge crossing its open bottom acllapted to support aremovable bottom p ate.

9. In a distributor for stokers, a tubular member adapted to beapproximately horizontally positioned in service including a top havingmeans adapted to interlock with a removable deilector side wallsconnected with the top and a ridge connecting the side walls adjacent totheir lower edges and adapted to support a. removable bottom plate, thebottom of the tube being open except for said bridge.

10. In a mechanical stoker, the combination of a substantiallyhorizontal tube dat tened at the bottom, a stem extending forwardly fromthe bottom of the tube and a fuel abutment in the form of a cross barcarried b the stem spaced forwardly from and projecting above the bottomof the impelling coal through the tube, a stem 1ntegral with andprojecting forwardly from the iattened bottom and a fuel abutment in theform of a cross bar carried by the stem, spaced from the forward end ofand extending above the bottom, the space between the cross bar and thefront end of the bottom being open for coal to pass downwardly on eachside of the stem. V

12. A fuel Vdeflector member for use on the upper side of a distributortube having a socket and a projecting lug thereon, comprising a platereduced in width at one end to engage said socket, and provided with asocket for receiving said lug, the width of the forward portion of saidplate being not less than the internal diameter of said tube, said platebeing provided with a reinforcing rib on its u per surface forpreventing bending of sai late when the same becomes heated while 1nuse.

13. A fuel distributin ing a plate adapted to orm the bottom of adistributor tube for stokers, said plate terminating adjacent to theforward end of said tube when in position therein, and having means forinterlocking engagement therewith, a fuel deilecting abutment spacedforwardly from the front end of the plate and extending above its u persurface, and means for connecting the a utment with the plate.

member compris- NATHAN M. LOWER. ALBERT R. CHALKER.

DI SCI-Al M E R 1,642,076.Nathan M. Lower and Albert R. Ghalker.Pittsburgh, Pa. DISTRIBUTOR TUBE ron S'roxmns. May 25, 1939, by theassignee,

Lettera Patent:V

[Oficial Gazette June 20, 1939.]

Patent dated September 13, 1927.

Disclaimer filed The Standard Stoker Company, Incorporar d Hereby entersthis disclaimer to claims 1, 4, 5, 6, 7, 8, 9, 12, and 13 e of saidDISCLAIMER 1,642,076.-Natll,an` M. Lower and Albert R. Ohalcer.Pittsburgh, Pa. DISTRIBUTOR TUBE Fon SToxEns. Patent dated September 13,1927. Disclaimer tiled May 25, 1939, by the assignee, The StandardStoker Company, Incorporated.

Hereby enters this disclaimer to claims l, 4, 5, 6, 7, 8, 9, 12, and 13of said Letters Patent.

[oficial Gam June zo, 1939.]

